Abstract: A high torque sprocket includes a body defining an outer periphery and a hub section defining an inner surface for engaging a bushing. A continuous toothed structure is disposed on the outer periphery of the body, and a textile reinforcement embedded in the body adjacent the inner surface of the hub section. The body is formed of a castable polymer material. In some cases, one or two optional flanges are disposed on side(s) of the body immediately adjacent the continuous toothed structure, in some aspects, a textile reinforcement may be embedded in a surface of the flange(s) immediately adjacent the continuous toothed structure. In some aspects, the high torque sprocket further includes a textile reinforcement embedded in the continuous toothed structure outer surface, and the textile reinforcement is selected from nylon, cotton, aramid, PTFE, and mixtures thereof.

Abstract: Methods of manufacturing a belt include laying up a first elastomeric layer of a belt build on a mandrel, laying up a tensile reinforcement layer on the first elastomeric layer, where the tensile reinforcement layer contains cords coated with a water based urethane compound, and laying up a second elastomeric layer on the first elastomeric layer and the tensile reinforcement layer. The belt build may be cured in a profile-forming mold, and afterward, cut to a predetermined belt width and/or length.

Abstract: A fabric layer includes a fabric and a crosslinkable elastomer, where the fabric defines a first side and the crosslinkable elastomer defines an opposing side. The fabric is coated with a crosslinkable elastomer and the combination is molded into a multiple tooth shaped fabric layer. In some aspects, the first side is an inner surface void of the crosslinkable elastomer. In some cases, the crosslinkable elastomer is crosslinked while the fabric layer is molded, while in some other cases, the crosslinkable elastomer is surface cured while the fabric layer is molded. The crosslinkable elastomer may be an alloy of crosslinkable polyethylene and EPDM. The fabric layer may be used as an outer layer of a synchronous drive belt, a timing belt, a poly-v belt, or offset tooth belt.

Abstract: The invention relates to an article including an elastic main body on the basis of a vulcanized rubber (17) having an article surface that is susceptible to wear, which is provided with a textile layer. The textile layer, particularly a woven fabric (16) or knitted fabric, has a mesh design that allows the vulcanized rubber (17) to penetrate to the textile surface to form a textile-vulcanized rubber hybrid system (15), wherein the vulcanized rubber portion on the textile surface can be controlled by means of the stitch number, stitch width and the thread design of the textile layer. The article is in particular a drive belt and in connection with the primary intended use, a method for making a drive belt is provided.

Abstract: A method for fabricating a belt with upstream treatment of a tension member. The belt comprises a belt body made of a polymeric material having elastic properties, having a top ply as belt backing and a substructure having a force transmission zone, and a tension member embedded into the belt body. The tension member has been treated with crosslinked polymer; in an upstream stage of the belt fabrication method, voids in the tension member are filled at least partly with crosslinked polymer and the tension member is sealed with an envelope layer of crosslinked polymer, this being done, in a single treatment stage or in at least two treatment stages, by wetting of the tension member with an overall treatment mixture comprising at least one prepolymer, at least one crosslinker and at least one solvent or dispersion medium, and then drying of the treated tension member.

Abstract: Disclosed is a V-ribbed belt comprising a profiled driving side that has a PK profile and is designed to transmit force to mating pulleys, and a substantially smooth rear side opposite the driving side; the coating of the V-ribbed belt has a thickness of more than 1.5 mm, and the elastomer mixtures of the base (1) and the coating (2) contain EPM and/or EPDM and the coating is essentially formed without fibres.

Abstract: A power transmission belt (20) having an elastic main body (17) includes a top layer as the belt backing and a bottom section having a power transmission zone. The power transmission zone and/or the top layer has/have a coating (15, 16), characterized in that the coating (15, 16) of the power transmission zone and/or the top layer includes at least the following layer construction: a base coating (18) made of a textile material, wherein the base coating (18) forms a bond with the elastic main body (17) and has a surface coating (19) including at least a mixture A, which contains at least one reactive diluent as per DIN 55945:2007-03. The invention further relates to a method for producing such a power transmission belt. The novel coating concept is applicable in particular in a toothed belt.

Abstract: A drive system or support system, in particular for elevators, is described, comprising a belt pulley having a diameter of at least 70 mm and a drive belt or support belt which is curved around the belt pulley, wherein the drive belt or support belt comprises a cover layer (1), which is arranged on the lower side of the belt facing toward the belt pulley, and at least one tension layer (2), which is arranged directly above the cover layer; the cover layer is made of a polymeric material having elastic properties, the tension layer contains at least one fiber bundle which is almost unidirectional and which runs in the longitudinal direction of the belt, wherein certain relationships apply between the thickness of the cover layer, the thickness of the tension layer, the diameter of the belt pulley (4) and the Shore A hardness of the cover layer.

Abstract: An article comprises an elastic main body on the basis of at least one thermoplastic elastomer or on the basis of a vulcanizate, with an article surface that is provided with a textile covering, wherein the textile covering is a plated knit fabric. The article is, in particular, a drive belt, preferably a V-ribbed belt.

Abstract: A belt comprises at least a belt body made of a polymer material having elastic properties, the belt including a cover layer as a belt backing, a substructure having a force-transmission zone, and a tension member in a ribbed design embedded in the belt body. The tension member is prepared with a cross-linked polyurethane in such a way that the polyurethane fills at least part of the tension member cavities. The polyurethane filling material enters into a mechanical connection to the tension member on the one hand and an adhesive connection to the belt body on the other hand. The polyurethane filling material has a Shore A hardness that is 0.5 to 10 times harder than the Shore A hardness of the belt body. The belt body is preferably likewise made of cross-linked polyurethane, in particular using a carbon tension member.

Abstract: A belt comprises at least a belt body made of a polymer material having elastic properties, the belt including a cover layer as a belt backing, a substructure having a force-transmission zone, and a tension member in a ribbed design embedded in the belt body. The tension member is prepared with a cross-linked polyurethane in such a way that the polyurethane fills at least part of the tension member cavities. The polyurethane filling material enters into a mechanical connection to the tension member on the one hand and an adhesive connection to the belt body on the other hand. The polyurethane filling material has a Shore A hardness that is 0.5 to 10 times harder than the Shore A hardness of the belt body. The belt body is preferably likewise made of cross-linked polyurethane, in particular using a carbon tension member.

Abstract: A method for treating a tension member in the production of a belt. The belt includes at least a belt body made of a polymer material having elastic properties, a cover layer as a belt backing, and a substructure having a force-transmission zone. The tension member has a ribbed design and is embedded in the belt body. The tension member is treated with an overall treatment mixture which forms a cross-linked polymer that on the one hand enters into a mechanical connection with the tension member and on the other hand forms an adhesive connection with the belt body.

Abstract: A traction system includes a composite rope (1), especially for an elevator. The composite rope (1) is driveable by a traction sheave (6). The traction system has a composite rope that is easy to handle, whereby high traction forces can be transferred, and the composite rope enables a narrower drive unit than known belt technology. To this end, the composite rope has parallel individual tension members (4) surrounded by an elastomer material which are interconnected by an elastomer connecting layer (5) on one side, and the tension members (4) engage in corresponding grooves (7) of the traction sheave (6). The penetration depth of the individual ropes (2) of the tension members (4) in the grooves of the traction sheave (6) is at least 25% of the diameter (d) of the individual ropes (2).

Abstract: A traction device includes tension members (2) coated with an elastomer material to form jacketed tension members (3). The jacketed tension members (3) are arranged next to each other in a plane in the cross section of the traction device, at such a distance from each other that there is a clear space (6) between each two mutually adjacent ones of the jacketed tension members (3). The jacketed tension members (3) are connected at the back thereof by a back layer. The clear space (6) begins on the side facing away from the back layer (4) and extends at least beyond the center point (5) of the tension member, and the ratio of the second diameter (d2) of the jacketed tension member (3) in relation to the first diameter (d1) of the tension member (2) is between 1.05 and 2.25.

Abstract: An article has an elastic main element based on a vulcanizate having a wear-susceptible article surface. The article is primarily a drive belt (8) having a top layer (9) as the belt rear and a substructure (10) having a force transmission zone (13), wherein the force transmission zone and/or the top layer is/are supplied with a textile overlay (15), wherein the textile overlay is in turn additionally prepared with a plastic. The plastic is a bonding agent that is arranged between the main body and the textile overlay (15), wherein the plastic is supplied such that it melts during vulcanization and penetrates into the textile overlay while bonding, connected to a permanent adhesive bond between main body and textile overlay. A cotton fabric is used as the textile overlay (15), for example. The plastic is in the form of a film, for example, particularly in the form of a PE film. The primary purpose of use is the V-belt, ribbed V-belt (8) and the toothed belt.

Abstract: The invention relates to a traction device (1), especially for an elevator system. The traction device (1) is driveable by a traction sheave. The task which is the basis of the invention is to provide a traction device which is simple to manipulate. High tension forces are transferable and the traction device makes possible a drive unit of lesser width compared to the known belt technology. For this purpose, the traction device is configured as a composite rope (1) wherein individual tension carriers (2, 3) are connected to each other via a one-sided elastomer connecting layer (4). The individual tension carriers (2, 3) lie in parallel and are jacketed with elastomeric material. The tension carriers (2, 3) engage in corresponding grooves (13) of the traction sheave (10). The tension carriers (2, 3) engage in the grooves (13) of the traction sheave (10) with at least 25% of their total diameter.

Abstract: A power transmission belt having an elastic basic body, comprising a top layer as a belt spine and comprising a substructure with a power transmission zone, wherein the basic body is composed of an at least partially vulcanized natural rubber mixture which contains at least one natural rubber component and at least one filler material and at least one reactive diluent in accordance with DIN 55945:2007 March.

Abstract: V-ribbed belts are formed by thermoplastic shaping and contain ribs that run at least on a first side in a longitudinal direction of the V-ribbed belt. The first side contains a layer composed of a textile warp-knit fabric made up of two different yarns. The warp-knit fabric is constructed from a first yarn composed of filaments with a module of more than 5N/1000 dtex, and a second yarn composed of filaments with a module of less than 2 cN/1000 dtex, both based on 5% extension. The first and second yarns form a coherent network and the yarns do not twine around one another. V-ribbed belts can be formed using an elastic warp-knit fabric, whose extension is based on the construction of the knitted fabrics. The belts maintain better noise reduction both in the new state and after a relatively long service life.

Abstract: An elevator load bearing assembly (20) includes a plurality of cords (22) within a jacket (24). The jacket has a plurality of grooves (32, 34, 36, 38 40) spaced along the length of the belt assembly. Each groove has a plurality of portions (50, 52, 54, 56) aligned at an oblique angle (A, B) relative to a longitudinal axis (48) of the belt (20). In one example, the grooves are separated such that there is no longitudinal overlap between adjacent grooves. In another example, transitions (60, 64) between the obliquely aligned portions are at different longitudinal positions on the belt. Another example includes a combination of the different longitudinal positions and the non-overlapping groove placement.

Abstract: The invention relates to an elastomeric product which contains a radical cross-linked rubber mixture, especially drive belts. For the production of elastomeric products, especially drive belts, having a long service life and producible in an environmentally friendly way, the rubber mixture contains (a) 0.1 to 50 phr of at least one carboxylic acid, which is at least ?,? unsaturated and ?,? unsaturated and preferably has at least one allylic hydrogen atom; and, (b) 0.1 to 50 phr of at least one salt-former as co-activator.